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OpeningTree - Chess Openings

OpeningTree - Chess Openings

Analyze Chess Moves and Games

31 ratings
22 reviews
🎮 Games
🎲 Board
$2.99 $0.99

Lowest price: Free 4 years ago (-100%)

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Details

  • Released
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Features

Developer

Michael Adams
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About

Explore chess openings with an extensive opening book and engine analysis. Analyze your games, create custom lines, and study moves from high-rated players. Accessible for visually impaired users.

✓Extensive opening book
✓Crafty engine analysis
✓Load and analyze PGN games
✓Create custom move lines
✓Accessible for visually impaired
✓Mark moves with colors
✓Save board to PGN
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What's New in OpeningTree

2.70

June 28, 2026

When viewing game lists, can now filter games by search term

User reviews

Most RecentHighest RatedLowest Rated

Be perfect if it also labeled the opening name

Great app, but please provide the names of the openings
RickcrRickcr

It’s stable and does what it says

Exactly as described - a chess opening explorer. It works and I am learning heaps from it.
drkderekdrkderek

Great app

I use this app to help learn chess moves… I wish however it could tell me what the actual openings were called and the defenses I play so I can better get a grasp on what I’m playing and my play style!!
ajb940302ajb940302

Indispensable

Une application indispensable pour tout ceux qui veulent travailler leurs ouvertures aux échecs.
Gratuit et sans pub (non non aucune), permet de regarder les ouvertures déjà jouées.
Très bonne appli
SilkscalpSilkscalp

It’s great

When I come back from my tournament then I can analyze it so that I can see how good or bad I played
kingrengytrekingrengytre
See 17 more reviews

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FAQ

What is OpeningTree's opening book based on?

OpeningTree's opening book is compiled from 640,000 high-rated games from recent years, featuring players rated 2300 and over. This ensures the opening data is relevant and reflects top-level play.

Can I play against the engine in OpeningTree?

Yes, OpeningTree allows you to play against the Crafty engine. You can use the 'move now' button to have the engine play the current best move, enabling you to practice playing out positions.

How does OpeningTree support visually impaired users?

OpeningTree is accessible to the blind and visually impaired using Voice Over. Users can tap squares for information and double-tap to select, with three different move methods available.

What is the price of OpeningTree?

OpeningTree is a paid app, priced at $0.99. This one-time purchase grants you access to all its features for analyzing chess openings and games.

How often is OpeningTree updated?

OpeningTree was last updated on August 26, 2025, with version 2.30. This indicates active development and ongoing improvements to the application.

Can I import my own chess games into OpeningTree?

Yes, you can import PGN files into OpeningTree, for example, from email attachments or downloads. The app can load and check these games against its opening book, with a limit of 5000 games per file for speed.

What are the main advantages of using OpeningTree over other chess apps?

OpeningTree stands out with its massive, up-to-date opening book derived from high-rated games, integrated Crafty engine analysis, and robust accessibility features for visually impaired users. It also allows for detailed customization of move lines.

What age rating does OpeningTree have?

OpeningTree has an age rating of 4+. This makes it suitable for a wide range of users, from young chess enthusiasts to experienced players.